Senior Data Engineer

Our client, a well-established energy business in London, is hiring a Senior Data Engineer to support the next phase of their growth. The role is based in Mayfair and operates on a hybrid basis, with three office days and two remote days per week.

We are looking for an engineer who is responsible for building, maintaining, and evolving the data pipelines and models that underpin our supply business. This includes ingestion, transformation, validation, and exposure of data used by trading, optimisation, operations, and reporting. The role exists to provide clear ownership of the supply data stack, reduce operational and analytical friction, and allow traders, analysts, and optimisation engineers to rely on high-quality, well-understood data without constant ad-hoc intervention. This position would sit within both the supply-side of our business and the broader technology department, meaning this role also includes engaging with the technology strategy of our client as a whole.

• 
  
• Own the Energy Supply Data Stack.
  
• Take end-to-end ownership of data pipelines supporting the supply business.
  
• Ensure data is accurate, timely, and fit for both operational and analytical use in our pipelines.
  
• Collaborate with supply managers to deliver insights and serve as a first point of contact.
  
• Build and Maintain Robust Data Pipelines.
  
• Ingest data from internal systems, market sources, and third‑party providers.
  
• Implement transformations, validations, and reconciliation logic using Python and SQL.
  
• Proactively identify and resolve data quality issues.
  
• Collaborate Across Engineering and the Business.
  
• Work closely with engineers to ensure data systems integrate with trading and optimisation platforms.
  
• Support the broader engineering team by owning supply‑domain data complexity.
  
• Contribute to improving standards and tooling across the data platform.
  
• Develop a Deep Domain Expertise in Energy Supply and UK Markets.
  
• Build a strong, working understanding of the UK energy supply industry, including market structures, products, and commercial drivers.
  
• Maintain familiarity with UK electricity and gas market mechanics, settlement processes, and key regulatory frameworks.
  
• Translate regulatory, commercial, and operational requirements into robust data models and pipelines.
  

• 
  
• Strong Python and SQL skills in data engineering contexts.
  
• Experience building and maintain production data pipelines.
  
• Experience working with SQL and data‑engineering environments such as Databricks or Spark.
  
• Ability to work closely with non‑engineering stakeholders and translate business needs into data models.
  
• Desire to become an expert in all facets of the energy systems in which they participates, from behind‑the‑meter asset optimisation to retail energy supply.
  

• 
  
• 4+ years of related experience.
  
• Experience in energy supply, trading, or market‑facing data systems.
  
• Exposure to regulated or operationally critical data environments.
  
• Familiarity with CHP, generation assets, or flexibility markets.
  

• 
  
• Clear ownership of a critical part of the businesss technical foundation.
  
• The opportunity to turn ad‑hoc, manual data work into robust systems.
  
• Close collaboration with trading, optimisation, and operations teams.
  
• A position with long‑term scope: as the company and product grow, so does your impact, responsibility, and career trajectory.